[ 2.442745] ------------[ cut here ]------------ [ 2.442818] refcount_t: underflow; use-after-free. [ 2.442883] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.442975] Modules linked in: [ 2.443022] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.443115] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.443180] Workqueue: netns cleanup_net [ 2.443223] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.443269] Code: 82 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 95 82 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.443432] RSP: 0018:ffffbd7300067d50 EFLAGS: 00010286 [ 2.443477] RAX: 0000000000000000 RBX: ffffbd7300067d60 RCX: 00000000ffffdfff [ 2.443543] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.443609] RBP: ffffbd7300067858 R08: ffffffff8315ba28 R09: 00000000ffffdfff [ 2.443681] R10: ffffffff8307ba40 R11: ffffffff8312ba40 R12: dead000000000122 [ 2.443759] R13: 00000000fffb752a R14: 0000000000000001 R15: ffff95f784b7d000 [ 2.443826] FS: 0000000000000000(0000) GS:ffff95f83b391000(0000) knlGS:0000000000000000 [ 2.443892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.443956] CR2: 000055f2804dea28 CR3: 00000000048bb003 CR4: 0000000000772ef0 [ 2.444031] PKRU: 55555554 [ 2.444056] Call Trace: [ 2.444079] [ 2.444103] netdev_run_todo+0x21a/0x550 [ 2.444142] ops_undo_list+0x1e3/0x1f0 [ 2.444183] cleanup_net+0x1b7/0x300 [ 2.444226] process_one_work+0x162/0x380 [ 2.444270] worker_thread+0x299/0x3c0 [ 2.444306] ? rescuer_thread+0x4c0/0x4c0 [ 2.444342] kthread+0x101/0x1f0 [ 2.444379] ? kthreads_online_cpu+0x110/0x110 [ 2.444424] ? kthreads_online_cpu+0x110/0x110 [ 2.444470] ret_from_fork+0x11c/0x140 [ 2.444506] ? kthreads_online_cpu+0x110/0x110 [ 2.444552] ret_from_fork_asm+0x11/0x20 [ 2.444590] [ 2.444615] ---[ end trace 0000000000000000 ]---